The Gear Head MP2120RED Wireless Optical Nano Mouse scans the desktop at up to 14 inches per second with 2G acceleration detection, providing one of the most accurate input devices available on the market today. Installation is a snap with our patented automatic wireless synchronization. Simply install the batteries, plug the Nano receiver into an available USB port and your mouse is automatically detected and synchronized with your computer. Our state of the art design utilizes 2.4 GHz Wireless Technology to provide an improved range of operation up to 30 feet away. Our innovative design allows you to store the Nano receiver in the bottom of the mouse when traveling, to ensure you are as productive on the road as you are in your office.